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NCT Number: NCT07023744

CANnabinoids for Drug Resistant Epilepsy (DRE) in Adults and Children

Epilepsy is a neurological disorder affecting more than 50 million people globally, including more than 260,000 Canadians. Cannabidiol (CBD) reduces seizure frequency and improves quality of life for adults and children with Drug Resistant Epilepsy (DRE). Several uncontrolled, small, open label studies reported that CBD-enriched Cannabis Herbal Extract (CHE) resulted in a reduction of seizure frequency, but we lack critical information on efficacy, comparative effectiveness and dosing of CBD and ∆9-tetrahydrocannabinol (THC) in children and adults with DRE. CAN-DRE is an early phase, triple-blind, placebo-controlled, randomized clinical trial to answer the questions of if cannabinoids work to reduce seizures in children and adults (24 months to 55 years) with DRE and if CBD works better in an isolate or in a CBD-enriched Cannabis Herbal Extract. The primary outcome of CAN-DRE is reported monthly seizure count from baseline to maintenance phase.

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Key information

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Ages 24 months to 55 years old at the time of enrollment
  • Diagnosed with DRE: not achieved seizure freedom, with adequate trials of 2 antiseizure medications 29
  • Medical history of 4 + clinically recognizable seizures (any type with clusters counted as a single event) per month
  • Have a negative pregnancy test at screening for patients who have experienced menarche
  • Agree to abstain from driving and recreational cannabis use throughout the study

Exclusion criteria

  • Diagnosis of psychogenic non-epileptic seizure
  • Recent (<30 days) change in anticonvulsant therapies including anticonvulsant medications, or settings on vagal nerve stimulator
  • Ketogenic diet started within 6 months (participants stable on the ketogenic diet for more than 6 months are eligible to participate)
  • Vagal nerve stimulator implanted and activated within 12 months
  • Concomitant regular use of narcotics (except in emergencies and physician supervised)
  • Initiation or dosage change of oral or injected steroids within 3 months
  • Allergy or intolerance to compounds in trial preparations
  • DRE secondary to progressive neurological disease
  • Clinically significant cardiac, renal or hepatic disease (as assessed by site investigator); elevated liver enzymes (GGT and/or AST and/or ALT) or lipase >3 times upper limit, adjusted for age
  • History of psychotic disorders
  • Uncontrolled (in the perspective of the qualified investigator) medical conditions including substance use disorders
  • History or concurrent cannabis use disorder
  • Unwilling or unable to use highly effective methods of contraception throughout the study period and three months post-trial, where applicable

Treatment and study plan

Placebo

Drug

Placebo arm: participants will receive Placebo MPL-012 oil only through the trial participation. MPL-012 is produced by MediPharm Labs, each mL contains 0mg CBD and 0mg THC.

CBD Isolate

Drug

CBD Isolate: MPL-015 is a CBD isolate, produced by MediPharm Labs, each mL contains 100mg CBD and 0mg THC.

CBD CHE

Drug

CBD-CHE arm: MPL -016 is a CBD-enriched cannabis herbal extract, produced by MediPharm Labs, each mL contains 100mg of CBD and 3mg of THC.

Primary outcomes

  1. Efficacy in reducing seizure frequency

    Time frame: 116 days

    reported monthly seizure count from baseline to maintenance

  2. Cannabinoid-related AEs and DLTs

    Time frame: 116 + 60 days

    The frequency and type of adverse events and dose limiting toxicities (DLTs) reported by caregivers and participants throughout the trial participation

Secondary outcomes

  1. participant/family acceptability of this trial design

    Time frame: 116 days

    to be measured via post-study questionnaire, open-ended questions asked, no specific scale is used.

  2. Quality of Life reported by adult participant/family

    Time frame: 116 days

    Quality of Life in Epilepsy Inventory (QOLIE-31) tool for adult participants. Changes from baseline to maintenance phase will be compared to measure the outcome.

  3. health resource utilization and changes

    Time frame: 176 days

    A trial-specific Health Resource Utilization Questionnaire (HRUQ) is used to collect epilepsy participants' healthcare resource usage and out-of-pocket healthcare expenses during trial participation. The data will be analyzed descriptively to measure direct and indirect healthcare resource utilization related to the intervention from baseline phase to 60-day follow up post study protocolized treatment.

  4. changes in work and activity impairment affected by seizure

    Time frame: 116 days

    WPAI (Work Productivity and Activity Impairment Questionnaire) asks about the effect of participant's seizure on their/their caregivers' ability to work and perform regular activities. Changes reported from baseline to maintenance phase will be compared.

  5. Quality of Life reported by pediatric participants and family

    Time frame: 116 days

    Quality of Life in Childhood Epilepsy (QOLCE-55) tool for pediatric participants (4 - 17 yrs). Changes from baseline to maintenance phase will be compared to measure the outcome.

Study contacts

Contact information is provided by the study sponsor or research team.

Lauren Kelly, PhD

CONTACT

[email protected]

204-242-3179

Sponsors and collaborators

Lead sponsor

University of Manitoba

Other

Collaborators

  • Canadian Institutes of Health Research (CIHR)
  • Research Manitoba

Registry information

Official study title

A Triple-Blind, Placebo-Controlled, Randomized Clinical Trial of CANnabinoids for Drug Resistant Epilepsy in Adults and Children

Acronym: CAN-DRE

Important dates

Study start
2026
Primary completion
2028
Study completion
2028
First posted
Jun 17, 2025
Registry last updated
Jun 11, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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